Pepperl+Fuchs NVD-111 Anleitungen Seite 16

WARNING DEVICE NVD-111
Installation
3.1.1
EN
14 - EN
Mounting the KVF-O Overflow Sensor
Usually, the switching point of the sensor must be located a few centimeters
above the normal liquid level (water zero line) in a position so close to the water
zero line that the switching point is surrounded by liquid when an overflow occurs.
This occurs
when there is back pressure in the sewage system or
■
if the drain is blocked.
■
The switching point of the sensor is located between the insulated connecting
piece and the top metal section (see chapter 2.3).
1
A
B
C
Figure 3.2 Mounting the overflow sensor
1 Overflow sensor KVF-O
A Air
B Fat, oil, grease (FOG)
C Water
L Water zero line
S Sensor switching point
X Alarm limit (maximum liquid level)
S
L